One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,11)(5,7)(8,13)(9,15)(10,16)(12,14)(18,22)(19,27)(20,30)(26,32)(33,34,39,36)(35,42,38,40)(37,41,46,44)(43,48,45,47)(1,3,5,9)(2,6,7,15)(4,12,13,10)(8,16,11,14)(17,18,23,22)(19,28,27,24)(20,25,30,31)(21,32,29,26)(33,34,39,36)(35,40,38,42)(37,44,46,41)(43,48,45,47)(2,7)(3,9)(8,11)(10,12)(17,19,23,27)(18,24,22,28)(20,29,30,21)(25,32,31,26)(33,35,39,38)(34,40,36,42)(37,43,46,45)(41,47,44,48)(1,2)(3,6)(4,8)(5,7)(9,15)(10,14)(11,13)(12,16)(17,20)(18,25)(19,29)(21,27)(22,31)(23,30)(24,32)(26,28)(33,36,39,34)(35,42,38,40)(37,44,46,41)(43,48,45,47)(1,3)(2,6)(4,10)(5,9)(7,15)(8,14)(11,16)(12,13)(17,21,23,29)(18,26,22,32)(19,20,27,30)(24,25,28,31)(33,37,39,46)(34,41,36,44)(35,43,38,45)(40,47,42,48)(1,4,5,13)(2,8,7,11)(3,10,9,12)(6,14,15,16)(17,22,23,18)(19,28,27,24)(20,31,30,25)(21,32,29,26)(33,38,39,35)(34,42,36,40)(37,45,46,43)(41,48,44,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.